Abstract

This paper describes foliar epidermal structure in 17 species belonging to 17 genera of the family Euphoprbiaceae. Anomocytic stomata is predominant, rarely they are anisocytic, paracytic on the same foliar surface with different combinations. Leaves are hypostomatic and rarely amphistomatic. The foliar surface is smooth, rarely striated. The foliar epidermal cell walls are straight or undulate. Distribution of stomata, stomatal index, stomatal frequency, stomatal size and other cell wall contours are described in detail.

中文摘要

本文針對大戟科下的17個屬，於每屬中挑出一物種作葉面表皮構造之描述。在所有的氣孔類型中，不規則狀氣孔佔了多數，但仍有少數的例子是由不等型氣孔及平行型氣孔構成之組合排列在同一葉表皮上；本文研究之物種葉片大都屬於氣孔下生型，只有少數屬於上下葉表面皆有氣孔的類型；葉表面多屬光滑，少數呈現細紋狀；葉表皮細胞壁則呈現線性排列或具波浪狀。氣孔之分布、氣孔指數、氣孔頻率、氣孔大小及細胞壁輪廓等詳細資訊一併於文中討論。

Keyword: Foliar epidermis, stomata, subsidiary cells, Euphorbiaceae.